Trek Fuel EX 8 XT Gen 6 2025|XS (27.5″ wheel)|S (27.5″ wheel)|M (29″ wheel)|ML (29″ wheel)|L (29″ wheel)|XL (29″ wheel)|XXL (29″ wheel)|Nautical Navy|Satin Mercury

Description

The Fuel EX 8 XT is an evolved trail bike, dialled for riders who chase down rowdy descents and want a bike that’s happy to pedal back to the top and do it again. The lightweight alloy frame pairs with upgraded 12-speed Shimano XT drivetrain to keep shifting precise while a 150 mm FOX Rhythm fork with Float EVOL air spring cushions the blow from rocks and roots. In-frame storage and adjustable geometry give you all the perks that the come with the carbon model, but without the lofty price tag.

It’s right for you if…

You want a full-suspension trail bike that prioritises suspension and shifting performance over a more expensive carbon frame.

The tech you get

A light and stiff alloy frame with 150 mm FOX Rhythm fork with Float EVOL air spring and GRIP damper for small bump compliance, plus a FOX Performance Float X rear shock. A Shimano XT 12-speed drivetrain for snappy shifting, and tubeless-ready Bontrager wheels. Plus, new adjustable geometry that lets you take control of your set-up.

The final word

For the rider who doesn’t want to be limited on the trail, the Fuel EX 8 is ready to handle everything. Its progressive trail geometry is built to keep you charging, and upgraded components are the cherry on top.

Specifications

*spec applies to all sizes unless otherwise noted

Frame Alpha Platinum Aluminium, internal storage, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, guided internal routing, magnesium rocker link, 34.9 mm seat tube, ISCG 05, 55 mm chain line, BSA 73, downtube guard, shuttle guard, ABP, UDH, Boost148, 140 mm travel *Fork Size:XS , S
Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 140 mm travel Size:S , M , ML , L , XL , XXL
Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 150 mm travel Shock Fox Performance Float X, 2-position damper, 185 mm x 55 mm Max compatible fork travel 160mm

Wheels

Wheel front Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle Wheel rear Bontrager Line Comp 30, Tubeless-Ready, Rapid Drive 108, 6-bolt, Boost148, 12mm thru axle Hub rear Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano MicroSpline freehub, Boost148, 12mm thru axle Skewer rear Bontrager Switch thru-axle, removable lever Rim Bontrager Line Comp 30, Tubeless Ready, 28-hole, Presta valve *Tyre Size:XS , S
Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 27.5 x 2.50″ Size:S , M , ML , L , XL , XXL
Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 29×2.50″ Tyre part Bontrager TLR sealant, 180 ml/6 oz Sealant Bontrager TLR sealant, 180 ml/6 oz Max tyre size Frame: 29×2.50″ (XS & S: 27.5×2.50″), Fork: See manufacturer

Drivetrain

Shifter Shimano XT M8100, 12-speed Rear derailleur Shimano XT M8100, long cage Crank Shimano Deore M6120, 30T ring, 55 mm chainline, 170 mm length Bottom bracket Shimano BB-MT501 BSA Chain Shimano SLX M7100, 12-speed Max. chainring size 1x: 34T round, 32T oval, min 28T

Components

Saddle Bontrager Arvada, hollow chromoly rails, 138 mm width *Seatpost Size:XS , S
TranzX JD-YSP39, 100 mm travel, internal routing, 34.9 mm Size:M , ML
TranzX JD-YSP39, 150 mm travel, internal routing, 34.9 mm Size:L , XL , XXL
TranzX JD-YSP39, 170 mm travel, internal routing, 34.9 mm *Handlebar Size:XS , S
Bontrager Line, alloy, 35 mm, 27.5 mm rise, 750 mm width Size:M , ML , L , XL , XXL
Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width Grips Bontrager XR Trail Elite, nylon lock-on *Stem Size:XS , S
Bontrager Elite, 35 mm, 0-degree, 35 mm length Size:M , ML , L , XL , XXL
Bontrager Elite, 35 mm, 0-degree, 45 mm length *Brake Size:XS , S , M , ML , L , XL , XXL
Shimano 4-piston hydraulic disc, M6100 lever, M6120 calliper Size:XS , S , M , ML , L , XL , XXL
SRAM DB 8 4-piston hydraulic disc *Brake rotor Size:XS , S , M , ML , L , XL , XXL
Shimano RT66, 6-bolt, 180 mm Size:XS , S , M , ML , L , XL , XXL
Shimano RT66, 6-bolt, 203 mm Size:XS , S , M , ML , L , XL , XXL
SRAM CentreLine, 6-bolt, round-edge, 180 mm Size:XS , S , M , ML , L , XL , XXL
SRAM CentreLine, 6-bolt, round edge, 200 mm Rotor size Max brake rotor sizes – Frame: 203mm, Fork: see fork manufacturer

Weight

Weight M 15.65 kg/34.51 lb (with TLR sealant, no tubes) Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.